Lock-out device for party-telephones.



D. W. KNEISLY. LOOK-OUT DEVICE FOR PARTY TELEPHONES.

APPLICATION FILED APR. 27, 1908.

' Patented Mar. 29, 1910.

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D. W. KNEISLY.

LOCK-OUT DEVICE FOR PARTY TBLEPHONES.

953,340. APPLIGATION FILED APR. 2}], 190a. Patented Mar. 29, 1910.

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1). W. KNEISLY. LOCK-OUT DEVIGE FOR PARTY TELEPHONES,

APPLICATION FILED APR. 2'7, 190B.

95 3,340. Patented Mar. 29, 1910.

3 SHEETS-SHEET 3.

WI TN ESSES I BY rnvrrnn srntrgsggrnnr orrren.

DANIEL W. KNEISLY, OF DAYTON, OHIO, ASSIGNOR TO THE DAYTON TELEPHONELOCKOUT MFG. 00., OF DAYTON, OHIO, A CORPORATION OF OHIO.

LOCK-OUT DEVICE FOR. PARTY-TELEPHONES.

Specification of Letters Patent.

Patented Mar. 29, 1910.

To all whom it may concern:

Be it known that I, DANIEL IV. Knnrsrr, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented certain new and useful Improvements in Lock-Out Devices forParty-Telephones, of which the following is a specification.

My invention relates to lockout devices for party line telephones andparticularly to improvements on the device set forth in my former patent#860,920, dated July 23, 1907, and in mypending application, Serial No.6,900.

The object of the invention is to provide a device of this character inwhich only the instrument selected from a series of instruments on thecommon line will be rung in calling the subscriber.

A further object is to provide a device whereby any subscriber otherthan the one called will be prevented from using his instrument untilthe line is returned to normal condition, thus preventing interruptionof the conversation, and preventing the conversation being overheard byother parties on the same line.

Other objects are to provide means for returning the respectiveinstruments to normal instantly, at the will of the operator, withoutthe necessity of completing a series of step-up operations as is usualin such devices, and to accomplish the various objects with but a singlebreak in the talking circuit at the subscribers instrument.

Further objects are to simplify the structure as well as the means andmode of operation of such devices whereby they will not only becheapened in construction, but will be more positive and efficient inoperation, easily operated, and unlikely to get out of repair.

ith the above primary and other incidental objects in view, as willappear from the specification, the invention consists of the means,mechanism, construction, and mode of operation, or their equivalentshereinafter described and set forth in the claims.

In the drawings Figure 1 is a rear view of the device showing the lockmechanism. Fig.

2 is a front view of the structure showing the selective apparatus. Fig.3 is an end view of the assembled device. Fig. 4 is a detail view of theoscillating polarized armature. Fig. 5 is an enlarged detail view of theoscillating lever in operated stepup position. Fig. 6 is a similar viewof the parts when operated to release the selective apparatus. Fig. 7 isan enlarged detail of a modification. Fig. 8 is a detail perspectiveview showing the relation of the magnets and polarized armature. Fig. 9is a diagrammatic view of the various circuits. Fig. 10 is a detail viewshowing the ringing circuit breaking device.

Like parts are indicated by similar characters of referencethroughoutthe several views.

The device shown in the drawings and herein described is designed to beone of a series of similar instruments located on a common or partytelephone line, and is adapted to be operated from a central station, bya series of separated impulses sent over the line; each instrument beingadapted to be released or brought into talking condition by different,predetermined number of separate impulses; the construction is such thatonly one instrument is ordinarily in talking circuitat a time, theremaining instruments of the line being maintained in inoperativecondition, through certain interengaging parts engaging with andpreventing the movement of the receiver hook when the receiver has beenremoved, to close the talking circuit.

In constructing the device there is employed a support or main frame 1preferably of metal, but which might be of any other suitable material.Pivoted at 3 on the frame 1 is a receiver hook 4: of ordinary form andconstruction, adapted when in its elevated position to close a pluralityof terminals or switch blades 5, 6 and 7, by the engagement therewith ofan insulated finger 8 carried on the hook arm 4: as in Figs. 1 and 2.The respective blades 5, G and 7 are mounted on the frame 1 and areinsulated from each other and from the frame, except 7 which iselectrically engaged with the frame.

Supported on brackets 9 10 on the main frame is an electro magnet 11,bridged across the main line, and excited by current from the centralstation. A permanent magnet 12 is also supported on the bracket 9 andextends under the magnet 11. The bracket 9 is of iron connecting thecores of the respective coils of the magnet 11.

Pivoted at 13 on the frame 1 is an oscillating segment 14: having in theperiphery thereof a series of notches or ratchet serrations 15. Theratchet serrations 15 are engaged by an actuating pawl 16 *arried on anoscillating lever 17 pivoted at 18 to the frame 1. The lever 17 carriesbelow its pivotal point 18 an armature 19 attracted by the magnet 11 tooscillate said lever against the tension of a spring 20 which tends toreturn the lever to normal after each movement due to an electricimpulse through the magnet 11.

The actuating pawl 16 engages the oscillating segment 14: above thelevel of the pivotal point, or eccentric therewith; whereby pressureupon said segment by the pawl due to the pull of the spring 20 upon thelever 17 will cause a revoluble movement of the segment. The directionof engagement of the pawl 16 and segment 1st is angular to a linetangent to the point of contact. The pawl 1(5 is pivoted to the lever17, and is permitted a slight pivotal movement at each oscillation ofthe lever 17 due to the elevation of the particular notch of the segmentl-l with which it engaged. The movement of the segment is primarilycaused by the eccentric engagement of the pawl 16 which presses upon thesegment above the pivotal point thereof tending to rotate the ment. Themovement of the segment and pawl however .15 hunted to the distance ofone tooth or notch at each operation by a pin 21 in the frame 1 whicharrests or limits the upward movement of the pawl 16. The actuation ofthe segment l-l is further assisted by a cam surface on the under sideof the pawl 16 which during the forward movement of the pawl engages apin 23) also in the frame 1, and serves to elevate the pawl. This isbest illustrated in Fig. Upon the oscillation of the lever 17 by theattraction of the magnet 11 the pawl 16 is withdrawn from engagementwith the segment lat, and when the cam surface 22 has receded beyond thepin 23 the pawl 16 drops to a position to engage the next notch of theseries as shown in solid lines in Fig. 5. hen the electric current isbroken, and the magnet 11 no longer attracts the armature 19, the spring20 Will return the lever 17 to normal causing the pawl flti to engagethe next tooth or notch of the series and there by oscillate the segmentl'lluntil arrested by the pin 21, as shown in dotted lines in Fig. 5. Aspring actuated pawl 2% is pivoted to the main frame, and normallyengages the ratchet teeth 15 of the segment ll to retain the segment inits operated position.

The lower end of the lever 17 is turned at substantially right anglesand is provided with a projecting pin Pivoted to the bracket 10 is atilting or oscillating polarized armature 26, controlled by the magnets11 and 12 and normally projecting into the path of the lever 17 or inthe present instance into the path of the pin 23 carried by said lever.and thus limiting the movement of said lever to a range sutticient towithdraw the pawl 16 from engagement with the segment and cause it toengage the next succeed ing tooth or notch. but preventing the movcmentof the lever sutlicient to release the pawl 24- to permit the return ofthe segment to normal, as hereinafter described. The upper extremity ofthe lever 17 is adapted to contact with a terminal 27, thereby closingthe ringing circuit of which the frame 1 and lever 17 forms a part.

In the series 15 of notches in the segment 1 t there are three notchesof greater depth than the others, a deep notch in which varies in itsrelative location in each of the series of instruments on a common line,according to the number of steps or impulses required to bring theinstrument into operative condition, a second similar deep notch ;1located in the same relative position in each instrument of the series,whereby all the instruments may be synchronously operated and a thirdnotch the initial notch of the series 15 of less depth than the notches(I: and g but of greater depth than the remaining notches. The notch .2is similarly located in each of the instruments on the line being theinitial notch. the second notch being in each instance a shallow notch,the notch :0 being variable in its location and occupying a differentposition in each instrument while the notch 1 located near thesubsequent end of the series is constant in its location being the samenumber of steps from 2 in every inst rument.

Pivoted to the rear of the frame 1 is a swinging dog 2%, adapted toengage a pin 29 in the receiver hook l; and prevent the elevation ofsaid hook as shown in dotted lines in Fig. 1. Ar linger 30 on the lever17 engages the dog 28, when the actuating pawl 16 drops into anyone ofthe deep notches a1, 1/, .2', of the series 21', and presses the dog 28out of the path of the pin, 29 in the hook arm l, thus permitting thehook to raise to close the talking circuits through the blades 5, (3 and7. See Fig. 9. The adjustment of the parts is such that when theactuating pawl 16 is in the deep notches y or 0;, the ringing circuitbetween the lever 17 and the terminal 27 is complete through the contactof said parts. and the hook l is unlocked through the engagement of thelinger ill) with the dog 28. However. the notch .2 being of less depththan :r and 1 the adjustment is such that when the pawl 16 is in saidnotch the dog 28 will be pressed out of the path of the pin 25) by thefinger 30, but on account of the less depth of said notch, the lever 17will not contact the terminal 2. and the ring ing circuit will remainopen. ll hen the finger 24 is in engagement with one of the shallownotches, not only will the ringing circuit be broken by the lever 17being held out of engagement with the terminal as in Fig. 2, but alsothe finger 30 will be held out of engagement with the dog 28, permittingthe dog to swmg into the path of the pin 28 and so lock the hook 4against movement even though the receiver be removed therefrom. Thenormal position of all the instruments on the line is with the actuating.pawl 16 in the initial deep notch 2, which permits the lever 17 tooscillate sulliciently to cause the finger 30 to push the dog 28 out ofthe path of the pin 29 in the hook arm thus allowing any subscriber tocommunicate with central by removing the receiver from the hook,permitting the hook to raise and close the talking circuit. However,when in this position the ringing circuit is open intermediate the lever17 and the terminal 27, due to the initial or medium deep notch notbeing of sutlicient depth to permit the contact of said parts, thuspreventing any other subseribers bell ringing when any one sub scribercalls the central station. \Vhen the actuating pawl 16 is in the extremedeep notch 00 the lever 17 contacts the terminal 27 and the ringingcircuit is complete, and the hook t is unlocked. This is also true atthe engagement of the actuating pawl 16 in the deep notch y. The objectof the deep notch 1 is to permit the instruments to be used for coderinging in the usual manner. In some instances the central station isclosed during certain hours, and it is desirable to arrange theinstruments on the line that there may be inter-comnninication over thecommon line between the respective instruments, inde pendent of thecentral station. This may be done by stepping up the device until theactuating pawl 16 in the third deep notch 1 at which time the ringingcircuits of each instrument will be closed and the respective receiverhooks unlocked.

After the respective devices have been stepped up to bring the desiredinstrument into the talking circuit, and the conversa tion finished itbecomes necessary to return the devices to normal condition, preparatoryto the next call. When it desired to return the parts to normal, animpulse is sent over the line in reverse direction from the centralstation, thus reversing the poles of the electromagnet 11 and causingthe polarized armature 2b to move on its pivot to theposition indicatedin Fig. a in which case it will be out of the path of the pin 25 andthrough the attraction of the magnet 11 and the armature 19 the lever 17will be oscillated to withdraw the actuating pawl .16 from engagementwith the segment 1-1; at the same time an arm 36 carried on the lever 17will engage the pawl 24 and oscillate it to withdraw same fromengagement with the segment 161 as in Fig. 6 thereby permitting thesegment to return to normal position when the actuating pawl 16 willrest in the initial or medium deep notch .2 of the series as beforedescribed. It will thus be seen that the step-up or selecting operationand the release or return to normal operations are both accomplished bythe oscillation of the lever 17 due to the attraction of the singlearmature 12 by the one magnet 11. hether the oscillation of the leveraccomplishes the stepaip, or the release of the segment, is determinedby the degree of movement thereof which in turn is determined by theposition of the pivoted polarized armature which is moved into or out ofthe path of the lever 17 according to the direction in which the electric impulse is sent through the magnet 11. A limited movement of thelever 17 due to its arrest by said polarized armature projecting intothe path thereof, will upon the return of the lever to normal cause thesegment to be moved up the distance of one notch. However, the extrememovement of the lever will cause the release of the seg ment by not onlywithdrawing the actuating pawl,,but also the retaining pawl 2-1. lVhilethe pawl 24 is shown operated by the arm 36 engaging the pawl beyond thepivotal point and operating by an upward movement, the pawlmight bedisengaged by a finger on the lever 17 adapted to engage the pawl aboveits pivot and pull it from engagement with the segment, as shown in theafore mentioned pending application.

It will be seen that the structure thus de scribed greatly simplifiesthe construction of the device and materially reduces the working parts,thus simplifying the operation and rendering the device less liable toget out of order.

Circuits-In Fig. 9 is illustrated dia grammatically the variouscircuits, and operating parts and connections, the central stationapparatus being indicated at the top, and the subscribers instrument atthe bottom of said figure. a and a is the main line, common to a numberof subscribers instruments. The magnet 11 is bridged across the line,the drop line 40 connecting with one terminal of the magnet 11, theopposite terminal being attached to the frame 1 as at 4L1. The seconddrop line 42 connects with the switch blade 7 which is in electricalcontact with the frame 1, thus completing the circuit between oppositesides of the line a, a, through the magnet 11 and frame 1 as indicatedin dotted lines Fig. 9. The subscribers call bell 7) is bridged betweenthe terminal 27 on the main frame 1, and the drop line 40, the circuitbeing from the line a through the drop 42 to the frame 1, through theframe 1 and lever 17 to the terminal 27 when the lever 17 contactstherewith, thence through the bells b to the drop 40 and to the line (4The subscribers calling magneto c is bridged between the drop lines l0and 12. The receiver circuit extends between the blade 6 through thesecondary of the coil (Z to the drop line 10, including in said circuitthe receiverc and condenser f. The transmitter circuit extends from theswitch blade 6 through the primary of the coil cl to the switch blade 5,including the transmitter g, and battery 7L. At the central station, arethe two lines 44:, and 415 connecting with the main line through theusual calling and answering jacks, not shown in the present drawing. Thelines 41-4, 45 connect with the sides a, a respectively of the mainline. The usual annunciator drop is indicated at 2', and is normallybridged across the lines 1 1, l5 through a switch j,- la is theoperators instrument; Z is a key for sending separate selecting impulsesover the line to operate the subscribers selector mechanism. A polechanger m is provided to reverse the direction of the current from thebattery or other source of energy 12,- 0 is a generator, adapted to bebrought into circuit by the closing of the switch 79.

Opcrati0n. hen in normal position as indicated in the drawings with theactuating pawl 16 engaging the notch .2 the receiver hook is unlocked asindicated by dotted lines Fig. 1. The subscriber operates the magneto c,and removes his re ceiver c "from the hook allowing the hook to beelevated by the action of the spring 43, to close the circuits betweenthe switch blades, 5, 6 and 7 as in Fig. 9. This call is indicated tothe central operator by the drop 2', the operator moving the switch j tocut the drop 2' out of circuit and to bring the operators instrument 75into the talking circuit. The transmitter circuit of the subscribersinstrument is closed through the switch blades 5 and (S; the receivercircuit being from the line a through the drop 42, the blade 7 to theblade 6, thence through the coil (Z, the receiver 6 and condenser to thedrop 1-0 and to the line (4 The break. in the ringing circuit betweenthe lever 17 and the terminal 2 7 when the parts are in normal position,prevents the current gen erated by the magneto c to call central, shortcircuiting through the instrument to ring the bells Z) of the calling orany other instrument on the line. Upon receiving the subscribers call,the operator will move the switch j to cut out the operators instrumentis and to bring into the circuit the impulse sending key Z.

The operator will select, or unlock the de sired instrument by operatingthe key Z to close the circuit a predetermined number of times, as maybe necessary to bring the actuating pawl 16 into the deep notch 00.

At each closure of the key Z the electric impulse will pass from thebattery a through the key Z and switch 7' to the line 14: thence to themain line a and over the drop lines 12 and through the magnets 1.1 ofevery instrument on the line, over the drop lines 1-0, main a and drope5 to the battery completing the circuit. Each impulse exciting themagnet 11 will cause the oscillatory segment 14: to he stepped up onenotch, as before described. At the first step or impulse, the actuatingpawl 16 of each instrument on the line will engage the second notchwhich in every instrument is a shallow one. This will hold the lever 17in such relation that the dog 28 will be disengaged by the finger 30,and will be permitted to swing into the path of the pin 29 in everyinstrument on the line. At each subsequent step the ac tuating pawl ofsome one of the series of instruments will engage the notch w, saidnotch 0? being differently located in each instrument. The instrument ofFig. 2 of the drawings is the number ten instrument, being brought intooperation on the elev enth step or impulse. The first step serves tolock every instrument, while the tenth subsequent step will release theillustrated instrument by the pawl 16 engaging the notch 00 which willpermit the lever 17 to oscillate to close the ringing circuit by thecontact of the lever 17 with the terminal 27, and will release thereceiver hook by the engagement of the finger 30 with the locking dog28. The subscriber is now called by closing the switch 29 thus sendingthe cur rent from the generator 0 over the line 41 1: and a to 12,thence through the frame 1, and lever 17, the terminal 27, through thebell as indicated at Z), to the drop line 10 to the return main (4 andthe line 45 to the opposite pole of the generator 0. Atthe time the pawl16 of the illustrated or called instrument engages the notch w, the pawl16 of every other instrument on the line engaged with a shallow notch,and the ringing circuit is broken, and the receiver hook is locked ininoperative position as described.

Vhen it is desired to return the instruments to normal atter thecompletion of the conversation, the pol-e changer m is operated and thekey Z is closed to send an impulse in the opposite direction over theline and through the respective magnets 11. The changed polarity of themagnet 11, will cause an oscillation of the polarized armature 26causing said armature 26 to move out of the path of the lever 17 therebypermitting said lever 17 to oscillate through the attraction of themagnet 11 and armature 19 on said lever, to disengage the actuating pawl16 from the notched segment 17 and to withdraw the retaining pawl 2%from engagement with the notched segment,

l l (l by means of the arm 86 carried by the lever 1 instrument beingunaffected by any varia- 17 be returned to normal by gravity. a doublemetallic circuit a, a has been described, the main line wire a might bedispensed with, under certain conditions, and the lines 4:0 and 45 maybe grounded as at at? and &S in Fig. 9, thus completing the circuitsthrough ground instead of through the line (4 If metallic talking andselecting circuits are desired, the ringing may be accomplished throughground as indicated at 4:9 and 50 in Fig. 9. Thus but two conductors arerequired to form both the operating and talking circuits, one of whichconductors may be the ground, or two metallic conductors may be employedwith an additional grounded ringing circuit. However the pre ferred formis two metallic conductors as shown in solid lines in the drawing. Theconstruction is also applicable to common return systems of telephony.The notch Y is so located that the teeth 23 of each instrument on theline will enter the notch Y simultaneously, thus unlocking everyinstrument on the line, and closing all the ringing circuits, wherebyintercommunication may be had, the desired instrument being indicated bycode ringing. As shown in the drawing all the instruments will be thusunlocked on the eleventh step.

In order that the ringing circuit will be broken when the receiver andtransmitter circuit are in use, a stud 51 is provided, projecting fromthe hook lever a, and carrying a roller 52, which roller is adapted toengage a pin 53 in the lever 17 when the hook 4: is in its elevatedposition, and thereby oscillate said lever to break the contact of thelever 17 and the terminal 27. This con struction is best shown in Fig.8. In calling a second party on the same party line the operation is thesame as if the calling and called parties were on different lines. Thecalling party removes his receiver and instructs the operator in theusual manner. It is not necessary that the subscriber should hang up hisreceiver again while the party is being called, but to the contrary, heshould keep the receiver off the hook in the customary manner. Theoperator will proceed to select the desired instrument on the callingline in the manner as described, and upon completion of the conversationthe instruments will be returned to normal, by the usual operation ofreversing the direction of the current.

It is to be noted that no adjustment of resistance according to theposition of the instrument on the line, or the strength of current isnecessary. The locking, unlocking, and selecting operations aremechanical, and while actuated by the electrical impulses, theoperations are performed independent of the strength of the current, the

hen so disengaged the segment will lVhile l ticlent strength to excitethe magnet 11 to tions thereof, providing it is always of sufattract therespective armatures.

From the above description itwill be apparent that there is thusproduced a device of the character described, posse sing the particularfeatures of advantage before enumerated as desirable, but which,obviously is susceptible of modification in its form, proportion, detailconstruction and arrangement of parts, without departing from theprinciple involved or sacrificing any of its advantages.

Having thus described my invention, I claim,

1. In a device as described, the combination with lock mechanism, of acontrolling device, therefor comprising a pivoted sector having pointsthereon at different distances from the axis, a pivoted lever, means onsaid lever engaging the said sector, whereby said lever will be variedin its relation to stationary parts of the device, as the engagement ofsaid lever with said sector is at a point of greater or less distancefrom the axis and connections between said lever and lock mechanism,substantially as specified.

2. In a device as described, lock mechanism, a pivoted lever,controlling said lock mechanism, means for oscillating said lever, avariable stop for said lever, comprising a pivoted sector, and means forvarying said stop, whereby said lever may be oscillated a greater orless degree, substantially as specified.

8. In a device as described, lock mechanism, a pivoted lever controllingsaid meclr anism, means for oscillating said lever, a variable stop tolimit the oscillations of said lever in one direction, comprising apivoted segment, having portions engaged by said lever at differentdistances from the pivotal point, thereby permitting said lever tooscillate throughout a greater or less degree, and means to bringdifferent portions of said segment to the engaging point.

4. In a device as described, a movable member adapted by its movement toclose electric circuits, a swinging dog adapted to project in the pathof said movable member to prevent the circuit closing movement thereof,a pivoted lever adapted upon oscil lation to move said swinging dog torelease said movable member, a variable stop to limit the oscillationsof said lever in one direction, comprising a pivoted sector, wherebysaid lever will be held inoperative, except at predetermined points inthe varia tion of said stop, at which points of engagement the leverwill be permitted to oscillate sufliciently to move said swinging dog toinoperative position, and means to oscillate said lever and vary saidstop sector, substantially as specified.

In a device as described, circuit closing mechanism, means to lock saidmechanism in inoperative position, means to release said mechanism,including a pivoted lever, a pivoted sector, adapted to limit themovement of said lever, engaging points on said sector at differentdistances from the center, where by said lever may be controlled throughvarying degrees of oscillation, said lever being adapted on its extremedegree of oscillation toward said sector to release said lock mechanism,and means to oscillate both said sector and pivoted lever, substantiallyas speci fied.

6. In a device as described, circuit closing mechanism, means to locksaid mechanism in inoperative position, controlling mechanism therefor,including a pivoted lever adapted when oscillated to extreme position inone direction to disengage said circuit lock mechanism, and whenoscillated to extreme opposite position to cause the return of thecontrolling mechanism to normal, variable stops to limit the oscillationof said. lever in either direction and means to actuate said stops,substantially as specified.

'7. In a device as described, circuit closing means, locking mechanismtherefor, c0ntrolling mechanism including a pivoted lever, means foroscillating said lever, stops to limit the oscillation of said lever ineither direction, means to move said stops whereby said lever may bepermitted an additional degree of oscillation in either direction, saidlever being adapted by such additional oscillation in one direction torelease said lock mechanism, and in the other direction to permit thereturn of the controlling mechanism to normal.

8. In a device as described, circuit closing means, lock mechanismtherefor, a selector mechanism controlling same, and including anoscillating notched segment, one of the notches thereof being of greaterdepth than other notches therein, a pivoted lever, a pawl carried bysaid lever and engaging said segment above the level of the pivotalpoint, means to oscillate said lever whereby said segment will beoscillated through a step by step movement by the engagement of saidpawl therewith, means whereby said lock mechanism will be released andthe circuits closed when said pawl engages the deep notch of saidsegment, and means to return the segment to normal, substantially asspecified.

9. In a device as described, the combina tion with lock out mechanism,of a selector mechanism controlling the same and comprising a pivotedsector, having a series of recesses in the edge thereof, one of saidrecesses being of greater depth than other recesses thereof, a pawladapted to successively engage said recesses, and means for pawl entersthe deep recess, substantially as specified.

10. In a device as described, the combina tion with lock out mechanism,of a selector mechanism controlling the same and comprising anoscillatory segment, having a series of recesses in the edge thereof,one of said recesses being of greater depth than other recesses thereof,a pawl adapted to successively engage said recesses, the engagement ofsaid pawl being at an inclination to a line tangent at the point ofengagement, and means for releasing the lock mechanism when said pawlenters the deep recess substantially as specified.

11. In a device as described, the combination with lock out mechanism,of a selector mechanism controlling the same, and comprising anoscillatory segment, having a series of recesses in the edge thereof,one of said recesses being of greater depth than other recesses thereof,a pawl adapted to successively engage said recesses, means forreciprocating said pawl, a cam face, adapted to elevate said pawl duringits forward movement, whereby said segment will be advanced thereby, andmeans for releasing the lock mechanism when the pawl enters the deepnotch, substantially as specified.

12. In a device as described, the combination with lock out mechanism,of a selector mechanism controlling the same, and comprising anoscillatory segment, having a series of recesses in the edge thereof,one of said recesses being of greater depth than other recesses thereof.a pawl adapted to successively engage said recesses, means forreciprocating said pawl, whereby said pawl will at each movement engagethe next succeeding recess and oscillate said segment during its forwardmovement, and a stop to limit the movement of said pawl whereby thesegment will oscillate at each operation a distance of one recess, andmeans for releasing the locking mechanism when the pawl enters the deepnotch, substantially as specified.

13. In a device as described, the combination with. lock mechanism, of aselector mechanism controlling same and comprising a movable stopmember, having a series of recesses therein, one of said recesses beingof greater depth than other recesses thereof, an oscillating lover, apawl carried by said lever and engaging the recesses of said movablemember in a direction angular to the path of travel thereof, wherebysaid member will be actuated at each oscillation of said lever, andmeans to release said lock mechanism when said pawl engages said deeprecess, substantially as specified.

14:. In a device as described the combination with lock mechanism, of aselector mechanism controlling same and comprising a releasing saidlocking mechanism when said movable stop member, having a series ofrellt) cesses therein, one of said recesses being of greater depth thanother recesses thereof, an oscillating lever, a pawl carried by saidlever, and adapted to be reciprocated by the oscillations of said lever,and engaging the recesses of said movable member on its forwardmovement, means whereby the pawl will be elevated during its movementwhile engaged in said recess, and means to limit the movement of saidpawl, and means to release said lock mechanism when said pawl engagesthe deep recess, substantially as specificed. I

15. In a device as described, the combination with lock mechanism, of aselector mechanism controlling same and comprising a movable stopmember, having a series of recesses therein, one of said recesses beingof greater depth than other recesses thereof, an oscillating lever, apawl carried by said lever, and adapted to be reciprocated by theoscillation of said lever, and engaging the recesses of said movablemember on its forward movement, a cam face formed on said pawl, a pinengaged by said cam face to elevate said pawl during its forwardmovement whereby said movable member will be advanced the distance ofone recess, and means to release the lock mechanism when said pawlengages the deep recess, substantially as specified.

16. In a device as described, the combination with lock mechanism, of aselector mechanism controlling same and comprising a movable stopmember, having a series of recesses therein, one of said recesses beingof greater depth than other recesses thereof, an I oscillating lever, apawl carried by said lever, and engaging the recesses of said member toadvance same at each oscillation of the lever, an electromagnet, anarmature attracted thereby at each impulse through said magnet, andadapted to oscillate said lever, a stop in the path of said lever tolimit the oscillation thereof, means to move said stop from the path ofthe lever whereby the lever will be permitted an additional degree ofoscillation, substantially as specified.

17. In a device as described, the combination with lock mechanism, aselector mechanism controlling same and comprising a movable stopmember, having a series of recesses therein, one of said recesses beingof greater depth than other recesses thereof, an oscillating lever, apawl carried by said lever, and engaging the recesses of said member toadvance same at each oscillation of the lever, an electromagnet, anarmature attracted thereby at each impulse through said magnet, andadapted to oscillate said lever, a stop in the path of said lever tolimit the oscillation thereof, said stop comprising a polarizedarmature, attracted into the path of said lever when the electricimpulses are sent through the magnet in one direction, and moved out ofthe path of the lever when the direction of the electric impulses isreversed, substantially as specified.

In testimony whereof, I have hereunto set my hand this 11th day of AprilA. D. 1908.

DANIEL V. KNEISLY. Vitnesses HARRY F. NOLAN, F. L. WALKER.

